Novak Djokovic uses one. So does Aryna Sabalenka. Along with the current world No.1s, many other touring pros and discerning players prefer racquets with 18x20 string patterns. The narrower string configuration offers a more predictable response and better ball connection for a heightened level of control. While often lower in power and spin potential, they offer greater confidence to play into tight spaces.
Traditionally more demanding and found in the hands of accomplished players, the latest models are getting increasingly user-friendly for a wider range of players. These are some of the best ones around.